Late-onset Tay-Sachs disease.
Pract Neurol
; 17(5): 396-399, 2017 Oct.
Article
in En
| MEDLINE
| ID: mdl-28739864
ABSTRACT
We discuss the assessment and differential diagnoses of a young adult Hungarian man with a 1-year history of a progressive and symmetric amyotrophic lateral sclerosis-like syndrome, along with irregular action tremor and stimulus-sensitive myoclonus of the arms. MR scan of the brain showed isolated cerebellar atrophy and formal neuropsychometric testing identified significant subclinical deficits in attention, processing speed and memory. We suspected a form of GM2 gangliosidosis, and white cell enzyme analysis showed markedly reduced enzymatic activity of ß-hexosaminidase A. Genetic testing subsequently revealed two heterozygous pathogenic mutations in the HEXA gene (c.1499delT p.(Leu500fs) and c.805G>A p.(Gly269Ser)), confirming the very rare diagnosis of adult-onset Tay-Sachs disease.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Tay-Sachs Disease
Type of study:
Diagnostic_studies
/
Prognostic_studies
Limits:
Adult
/
Humans
/
Male
Language:
En
Journal:
Pract Neurol
Year:
2017
Document type:
Article
Affiliation country:
Reino Unido